Qhov Tseem Ceeb Qhov txawv - Amplifier vs Oscillator
Amplifier thiab oscillator yog ob yam tseem ceeb hauv kev sib txuas lus hluav taws xob txawm tias qhov sib txawv tuaj yeem raug sau tseg ntawm lawv raws li lawv txoj haujlwm. Amplifier yog qhov pib ntawm lub tswv yim ntawm kev sib txuas lus los ntawm cov xaim, thiab oscillator yog tus yuam sij rau kev hloov pauv wireless. Qhov sib txawv tseem ceeb ntawm amplifier thiab oscillator yog tias oscillator ua raws li qhov chaw thaum lub amplifier ua tus multiplier.
Amplifier yog dab tsi?
Ib lub tshuab hluav taws xob yog ib qho khoom siv uas ua rau kom muaj qhov loj me ntawm cov teeb liab hluav taws xob. Nws tsis tsim ib qho teeb meem raws sij hawm. Txhua lub teeb liab generated nyob rau hauv lub amplifier qhia distortion rau cov zis teeb liab. Lub amplifier zoo yuav tsum tsis txhob hloov cov duab ntawm lub teeb liab tab sis yuav tsum ua kom lub amplitude. Lub teeb liab tso zis yuav tsum muaj zog tshaj qhov kev tawm tswv yim. Nws tuaj yeem suav nrog rau qhov voltage lossis tam sim no. Lub tshuab nqus tsev vacuum amplifier yog qhov ua ntej ntawm amplifiers. Tom qab ntawd tuaj qhov kev txhim khu kev qha tshaj plaws; transistor amplifier. Qee lub sij hawm amplifiers raug cais raws li linear thiab non-linear amplifiers. Cov zis tawm ntawm ib lub amplifier linear yog ncaj qha proportional rau nws cov tswv yim. Common audio amplifiers tuaj yeem suav tias yog linear amplifiers. Yog hais tias lub amplifier siv nyob rau hauv pem hauv ntej kawg ntawm lub teeb liab ntws, nws yog hu ua pre-amplifier. Yog hais tias nws nyob rau theem kawg, nws yog hu ua lub hwj chim amplifier. Ntxiv mus, amplifiers tuaj yeem hloov npe los ntawm qhov chaw siv. Amplifiers uas ua kom nrov nrov xov tooj cua zaus hu ua RF amplifiers. Audible range amplifiers hu ua suab amplifiers. Qhov zoo ntawm lub amplifier yog nyob ntawm ntau yam tsis xws li nce, slew tus nqi, tso zis impedance, tag nrho harmonic distortion, bandwidth, thiab teeb liab rau suab nrov piv.
Daim ntawv thov ntawm lub amplifier yog seamless. Los ntawm lub hnab tshos xov tooj cua mus rau qhov nyuaj tshaj plaws spaceship, lub amplifier yog nyob rau qhov twg amplification ntawm ib tug tsis muaj zog teeb liab yuav tsum tau. Cia peb xaiv lub hnab tshos xov tooj cua ua piv txwv. Muaj RF amplifier sab hauv los ua kom cov xov tooj cua tsis muaj zog. Lub teeb liab amplified yog sib xyaw nrog lwm lub teeb liab thiab dua amplified. Tom qab ntawd lub teeb liab yog demodulated, thiab lub teeb liab demodulated mus los ntawm lub suab preamplifier. Thaum kawg, nws yog amplified los ntawm qhov kawg amplifier theem thiab pub rau tus hais lus. Tam sim no peb tuaj yeem mloog peb lub xov tooj cua nyiam. Yog tias peb xav tau ntau lub suab paj nruag, peb yuav tsum rov ua kom nrov dua los ntawm lub tshuab hluav taws xob sab nraud.
Inside of the audio amplifier
Oscillator yog dab tsi?
Lub sij hawm oscillation yog txhais raws li cov lus tsa suab nyob ib ncig ntawm qhov chaw ruaj khov. Hauv cov khoom siv hluav taws xob, lub oscillator yog lub tshuab hluav taws xob ntawm lub sijhawm hluav taws xob hluav taws xob. Amplitude, zaus thiab cov duab yog ib co yam ntxwv ntawm lub teeb liab hluav taws xob. Feem ntau, ib qho oscillator yog siv los tsim ib zaus ib zaug. Kev xyaum, lawv tsim ntau zaus nyob ib ncig ntawm qhov xav tau zaus. Lawv yog tsim los tsim ntau yam tso zis waveforms xws li sinusoidal, square thiab pom hniav. Cov zaus tsim los ntawm ib qho oscillator kis tau los ntawm cov zaus tsawg heev mus rau qhov siab. Ntau qhov kev faib tawm muaj rau oscillators. Feem ntau, lawv muab faib ua peb chav kawm los ntawm qhov tso zis ntau zaus. Tsawg zaus oscillators tsim cov zaus qis dua 20 Hz. Suab oscillators tsim cov zaus ntawm 20Hz thiab 20 kHz. Oscillators uas tsim cov zaus siab dua 20 kHz yog categorized rau hauv RF oscillators. Nws yog qhov nyuaj rau tog rau hauv lwm hom oscillator xws li kev sib haum xeeb oscillator thiab so oscillator txij li cov khoom siv hluav taws xob zoo xav tau.
Ntawm oscillator yog qhov zais cia tom qab lub moos hluav taws xob raug. Crystal oscillator nyob rau hauv lub moos txiav txim qhov ntev ntawm ib tug thib ob; thiaj li yog lub sijhawm. Cov khoom siv RF, Cov twj paj nruag hluav taws xob, thiab cov tshuab hluav taws xob muaj cov oscillators.
Qhov txawv ntawm Amplifier thiab Oscillator yog dab tsi?
Definition of Amplifier thiab Oscillator
Amplifier: Amplifier yog ib qho khoom siv hluav taws xob uas siv los ua kom lub zog hluav taws xob nce ntxiv.
Oscillator: Oscillator yog ib qho khoom siv hluav taws xob uas siv los tsim cov hluav taws xob oscillatory lossis voltages los ntawm kev tsis siv tshuab.
Yam ntxwv ntawm Amplifier thiab Oscillator
Signal:
Amplifier: Amplifiers tsis tsim cov teeb liab
Oscillator: oscillators yog tsim los tsim hluav taws xob signals.
Kev nkag thiab tawm:
Amplifiers: Amplifiers muaj ob qho kev tawm tswv yim thiab cov zis thaum oscillators tsuas muaj cov zis.
Oscillator: Tsis muaj dab tsi pub rau oscillator los tsim cov zis. Oscillator, nws tus kheej tsim cov zis.
txheej txheem:
Amplifier: Amplifiers tsis ua dab tsi txog thaum lub teeb liab nkag mus rau lub tswv yim.
Oscillator: Oscillators tsim cov teeb liab los ntawm lub sijhawm ntawm lub zog.
Image Courtesy: "Lub Hom PhiajCyrus1-2" los ntawm Lub Teeb Tam Sim No - en:MissionCyrus1-2.jpg. (Public Domain) ntawm Commons "Yellow-LED thaiv oscillator 1" los ntawm Wvbailey - Tus kheej ua haujlwm. (CC BY 3.0) ntawm Wikimedia Commons
